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Mathematics 9 Online
leila1234567:

1.z=m+a+b

leila1234567:

It's literal equations

supie:

Ok, do we have a word problem so we can plug the numbers in?

ramen:

Are there any numbers representing these variables?

leila1234567:

no my teacher didn't put numbers on them

ramen:

So what variable are we solving for then?

leila1234567:

a

ramen:

Ok so since this is a simple addition equation, all we would have to do is just subtract M and B from the right side and put it on the left side. This should isolate A on a side by itself.

ramen:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @animegirl0 As written this isn't really rigorous. You hint at using induction to prove this, so you should actually demonstrate (by writing down an induction argument) that it works, instead of just showing it for a few cases. That is, suppose that 1(1−z)n=1+(nn−1)z+(n+1n−1)z2+(n+2n−1)z3+⋯ and then derive from this that 1(1−z)n+1=1+(n+1n)z+(n+2n)z2+(n+3n)z3+⋯ You should also stipulate that this is only valid when |z|<1. \(\color{#0cbb34}{\text{End of Quote}}\) Nice copy and paste. this doesn't even relate to this question.

leila1234567:

ok thank you

ramen:

np. What did you get as ur answer?

leila1234567:

I got z-b=a?

ramen:

What happened to the variable M?

leila1234567:

oh z-m-b=a then

ramen:

That is correct good job

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